A spinoff of Consol Energy has laid off 200 coal miners because of a state environmental ruling limiting mining beneath a creek in a state park in western Pennsylvania. CNX Coal Resources issued the temporary layoff notices Tuesday at its Bailey Mine complex.

The company is contesting last month's ruling by the state Environmental Hearing Board restricting mining within 100 feet of Kent Run, a stream in Ryerson Station State Park.

The companies say the stream buffer would mean leaving 360,000 tons of coal worth more than $15 million in the ground.

The state Department of Environmental Resources sued Consol claiming longwall mining caused a dam at Ryerson to leak, forcing the agency to drain Duke Lake in 2005. The parties settled in 2013 so the dam could be replaced.